You can deduct the expenses provided your income was not reported on a Form W-2. You do that by entering your income and expenses in the self-employed section in TurboTax. You can enter the items you mentioned as expenses, but you should first work through the asset entry section where you will be asked if the items you purchased cost less than $2,500. When you answer yes to that question you will be able to take an election to expense the items.